AI agents call compare to retrieve information from Proxima without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The tool name 'compare' typically implies a read-only operation that examines and contrasts data. Given the sibling tools are primarily analytical and query-based (search, analyze, ask), and the server is described as a gateway for analysis and coding without modifying external systems, this appears to be a data retrieval or analysis tool.
From the tool's definition Tool named 'compare' with empty description. Based on naming convention and context among sibling tools (analyze_document, analyze_file, academic_search, ask_all_ais, etc.), this tool most likely performs a comparative analysis or retrieval operation without…
Documented attack patterns abuse exactly the kind of access compare gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Proxima, and nothing reaches the server without passing your rules. This is the rule we recommend for compare:
{
"version": "1",
"default": "deny",
"tools": {
"compare": {}
}
}compare is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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compare. It is categorised as a Read tool in the Proxima MCP Server, which means it retrieves data without modifying state.
Register the Proxima MCP server in PolicyLayer and add a rule for compare: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Proxima. Nothing to install.
compare is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the compare rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for compare. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
compare is provided by the Proxima MCP server (zen4-bit/proxima). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 50 Proxima tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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50 Proxima tools catalogued and risk-classified — across an index of 42,500+ MCP servers.